| 摘要 |
945,997. Magnetic recording &c. heads. PHILIPS ELECTRICAL INDUSTRIES Ltd. Sept. 2,1960 [Sept. 5, 1959], No. 30374/60. Heading G5R. A ferrite pole-piece unit 1 is made of 3 parts 3, 4 and 5 joined by glass or solder 6, 7 to form read/write gaps, the unit being clipped to a ferrite yoke 2, carrying windings 9,10, by spring means 11, 12, 13. The overlapping areas of the unit 1 and yoke 2 may be ground half-away to reduce the thickness of ferrite (Fig 3) and the rigidity and the maintenance of low reluctance at this joint may be assisted by ferrite cladding plates 20, 21. |
